人巨噬细胞的吞噬功能检测，下列说法正确的是()

A．用人巨噬细胞和绵羊的红细胞混合后孵育

B．用人巨噬细胞和鸡的红细胞混合后孵育

C．巨噬细胞吞噬CRBC百分率和吞噬指数判断其吞噬功能

D．吞噬指数＝(吞噬CRBC的巨噬细胞数/200)

E．观察CRBC消化程度来反映巨噬细胞的消化功能

_____Peter____ Bill is good at sports. They both play basketball really well.

A．Either; or

B．Not only; but also

C．Both; and

D．Neither; nor